Ventilation device

ABSTRACT

A ventilation device may include a housing, a fluid channel system, a heat exchanger, and a slider arrangement. The slider arrangement may include at least one first slider and at least one second slider arranged within the fluid channel system upstream of the heat exchanger and downstream of the heat exchanger respectively. The first and second slider may be guidable transversely with respect to at least one fluid flow. The first and second slider may each be actuatable. At least one of a volume flow and a mass flow of at least one fluid flow may be at least one of controllable and regulatable via actuation of the first slider. At least one of a predetermined fluid temperature and a predeterminable fluid temperature of a mixed fluid may be settable and at least two fluids may be mixable via actuation of the second slider.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to German Patent Application No. DE 102019 219 536.9, filed on Dec. 13, 2019, the content of which is herebyincorporated by reference in its entirety.

TECHNICAL FIELD

The invention relates to a ventilation device, in particular an airconditioning device, expediently a HVAC air conditioning device, for aroad motor vehicle, preferably for an electrically drivable road motorvehicle.

BACKGROUND

A ventilation device, which in specialist circles is also known underthe acronym HVAC air conditioning device or HVAC air conditioner or HVACair conditioning system, is preferably used in the automotive sector forthe ventilating or respectively air conditioning of a motor vehicleinterior of a road motor vehicle or in the private sector for theventilating or respectively air conditioning of a living space. Thecommon abbreviation “HVAC” in specialist circles designates here a“Heating-Ventilating and Air Conditioning Device”, in German forinstance a “Heizungs-Lüfflungs- and Klimavorrichtung”, therefore adevice for the conditioning of, for example, indoor air. The term“conditioning” means in this context that the temperature, humidity,purity and the composition of, for example, indoor air is able to becontrolled or regulated.

The known ventilation devices routinely have a fluid channel systemwhich has a cold channel for the directing of a cold fluid flow of coldfluid, a hot channel for the directing of a hot fluid flow of hot fluid,and a mixed channel for the directing of mixed fluid. The cold fluid istemperature-controlled to be relatively cold compared to the hot fluid.In order to meet the temperature requirements on the part of the user,provision is usually made to provide the mixed fluid by mixing the coldfluid flow with the hot fluid flow according to user preferences. Forthe mixing, routinely so-called sliders are used, which allow the volumeproportion of the cold fluid flow from the cold channel and the volumeproportion of the hot fluid flow from the hot channel to be set at theprovided mixing fluid volume. Thereby, as a result, optionally arelatively hot or cold temperature-controlled mixed fluid can beprovided, which is then streamed for example via ventilation openingsinto a motor vehicle interior of a road motor vehicle. The sliders arepreferably actuated respectively by a pinion shaft which is rotatablymounted and drivable in a housing of the ventilation device, for exampleit is usual to provide an activatable actuator on the housing which isdrivingly coupled with the pinion shaft.

As is generally usual in the automotive sector and in the privatesector, design solutions which are optimized with regard to lightweightconstruction and installation space are also required in the field ofventilation devices, in order to generate economic advantages.

SUMMARY

Proceeding from this problem, the object of the invention lies inproviding an improved or at least a different embodiment for aventilation device.

In the present invention this problem is solved in particular by thesubject matter of the independent claim(s). Advantageous embodiments arethe subject matter of the dependent claim(s) and the description.

The basic idea of the of the present invention lies in equipping aventilation device with several sliders which are respectively optimizedconstructionally according to functional standpoints. The optimizedsliders generate the advantageous effect that, compared to theventilation devices known hitherto, volume- and/or mass flows of thefluid flows flowing through the ventilation device can be set, inparticular regulated or controlled, more precisely. In particular, theadvantage can thereby be achieved that a fluid flow which is able to betapped on the part of the user corresponds to a predetermined orpredeterminable fluid temperature or follows a predetermined orpredeterminable fluid temperature profile more rapidly and moreprecisely than possible hitherto.

For this, provision is made that the ventilation device is equipped witha housing which has a fluid channel system of a cold channel for thedirecting of a cold fluid flow of cold fluid, of a hot channel for thedirecting of a hot fluid flow of hot fluid, and of a mixed channel forthe directing of a mixed fluid flow of mixed fluid, provided from coldfluid and/or hot fluid. The housing can also serve here for theprotection of components of the ventilation device, in particular forprotection from interferences which act from outside the housing, forexample dirt and/or intrusive fluid and/or electromagnetic radiation.Expediently, the housing can form or delimit a single-chambered ormulti-chambered installation space, wherein in the interior of theinstallation space components of the ventilation device and expedientlythe fluid channel system can be received in a house-like manner, inparticular can be loosely inserted temporarily or fixedly arrangedpractically permanently. On the housing, components and/or the fluidchannel system of the ventilation device can be positioned and/or fixedon the housing from inside the housing and/or from outside the housingin a touching manner, in particular in a materially bonded,force-fitting and/or form-fitting manner. For example, the housing hassuitable positioning arrangements and/or fixing arrangements for this,by way of example bearing sites and/or fixing points. The housing, whichis configured in particular having one part or several parts, isexpediently formed from at least one housing wall or from severalhousing walls which are cohesive, in particular in a materially bondedmanner. When the housing is formed from a single housing wall, thisconcerns expediently a cylinder housing which is rotationallysymmetrical with respect to a rotation axis, for example a circularcylinder housing, a cone cylinder housing or a frustum cylinder housing.If the housing is formed from several housing walls which are cohesive,in particular in a materially bonded manner, this can concernexpediently a cuboid-like housing box or a housing box which isconfigured in a complex manner. In any case, the housing can be formedfrom a plastic, a metal material or a composite material and inparticular can be produced at a favourable cost within a productionmethod which is suitable for the respective material.

Within or completely within or in the region of the fluid channelsystem, a heat exchanger for the cooling and/or heating of cold fluidand/or of hot fluid and/or of mixed fluid is arranged in a manner ableto be washed around with fluid, fixedly on the fluid channel system, inparticular within the cold channel on a wall of the cold channel orwithin the hot channel on a wall of the hot channel or within the mixedchannel on a wall of the mixed channel. Practically, the heat exchangercan be configured to be electrically operable and supplied viacorresponding electrical contacts with electrical energy originatingfrom a supply arrangement of the ventilation device. Furthermore, theheat exchanger can be controlled by means of a control arrangement ofthe ventilation device, in particular according to predeterminedventilation wishes on the part of the user.

The ventilation device has, furthermore, a slider arrangement which hasat least one first slider arranged upstream with respect to the heatexchanger, in particular completely within, within the fluid channelsystem on the fluid channel system, in particular within the coldchannel on a wall of the cold channel or within the hot channel on awall of the hot channel or within the mixed channel on a wall of themixed channel, and transversely with respect to the cold fluid flowand/or the hot fluid flow and/or the mixed fluid flow in a manner whichis able to be guided movably, and at least one second slider arrangeddownstream with respect to the heat exchanger, in particular completelywithin, within the fluid channel system on the fluid channel system andtransversely with respect to the cold fluid flow and/or the hot fluidflow and/or the mixed fluid flow in a manner which is able to be guidedmovably. Each slider is able to be actuated respectively within a slidermovement in a slider movement direction oriented transversely orsubstantially transversely with respect to the cold fluid flow and/orthe hot fluid flow and/or the mixed fluid flow. This has the effect thatby means of the first slider a volume flow or a mass flow of one or moreof the fluid flows, in particular the cold fluid flow and/or the hotfluid flow and/or the mixed fluid flow, is to be controlled or regulatedthrough the fluid channel system. This has the effect, furthermore, thatby means of the second slider a predetermined or predeterminable fluidtemperature of the mixed fluid is adjustable by mixing of cold fluidand/or hot fluid and/or mixed fluid. Hereby, advantageously a fluid flowwhich is able to be tapped on the part of the user is adapted morerapidly and more precisely than hitherto possible to a predetermined orpredeterminable fluid temperature or a predetermined or predeterminablefluid temperature profile.

The first slider can be arranged movably within the cold channel on awall of the cold channel or within the hot channel on a wall of the hotchannel or within the mixed channel on a wall of the mixed channel, inparticular in a guidable manner. The second slider can be arrangedmovably within the cold channel on a wall of the cold channel or withinthe hot channel on a wall of the hot channel or within the mixed channelon a wall of the mixed channel, in particular in a guidable manner. Thathas the advantageous effect that the sliders can respectively come incontact directly, in a touching manner, with the fluid flowing throughthe ventilation device, in order to interact with the fluid in aflow-influencing manner.

A single one, or both, sliders can be moved in particular independentlyof one another, within a slider movement. Preferably, for this purposerespectively a pinion shaft is associated with a slider.

Furthermore, at least one of the two, or all, sliders can berespectively mounted by means of a guide arrangement arranged on thefluid channel system, in particular within the cold channel on a wall ofthe cold channel or within the hot channel on a wall of the hot channelor within the mixed channel on a wall of the mixed channel, relative tothe fluid channel system and or the housing, in a guidable manner. Thishas the advantageous effect that the sliders are able to be movedrelatively easily, for example by means of an actuator, within a slidermovement.

The ventilation device can have expediently a first slider, inparticular also designated as forward flow slider, which has or forms aslider body.

In particular, the slider body of the first slider can be made from aplastic or from a metal material or a composite material.

Further in particular, the slider body of the first slider can be ofsquare plate-shaped or rectangular plate-shaped configuration or flatshape. The term flat shape can mean that the slider body is configuredto be thin in the manner of a metal sheet. Expediently, the slider bodyis configured to be relatively thin compared to a second slider body ofthe second slider, so that the slider body of the first slider could bedesignated as “thin slider”.

The slider body of the first slider can extend along two body axes,aligned in an angled manner, in particular at right angles, to oneanother, in longitudinal direction and in width direction, wherein theslider body extends in vertical direction along a body vertical axisaligned at right angles to the two body axes. The slider body can beconfigured here narrower in vertical direction than in longitudinaldirection and width direction. In particular, the slider body is only afew millimetres or fractions of a millimetre thick in verticaldirection, whereas it is several millimetres thick in longitudinaldirection and width direction.

The slider body of the first slider can have, furthermore, four marginvertical edges aligned parallel or substantially parallel with respectto the body vertical axis. The margin vertical edges are connected toone another via margin longitudinal edges aligned respectively parallelor substantially parallel to the body axes. In particular an edge can beformed between two faces which are touching one another.

Expediently, respectively two immediately adjacent margin vertical edgescan be configured jointly with respect to the body axes in a bent,hemispherical or angular manner, in particular a C-shaped or U-shapedconfiguration can be realized. The slider body of the first slider canthereby have respectively an arched edge on two sides which are opposedto one another. This has the effect that a controlling or regulating ofa volume flow or of a mass flow of the fluid flows which are to becontrolled or regulated is advantageously assisted.

Furthermore, the slider body of the first slider can have a free,circumferential and flat cohesive edge. The edge can form ahoneycomb-like reinforcement or a labyrinth edge, so that the sliderbody of the first slider is reinforced against external stresses and istherefore less deformable. Furthermore, the edge can form or have amultiplicity or a plurality of honeycomb-like or box-like reinforcementelements which serve respectively for the reinforcing of the sliderbody.

The slider arrangement can have a pinion shaft, drivable rotationallyaround its longitudinal axis in circumferential direction, arranged in atouching manner on the first slider, for actuating the first sliderwithin the slider movement. The slider body can have here an actuationarrangement which is able to be brought into touching engagement with acounter-actuation arrangement of the pinion shaft.

Expediently, within the slider movement, the first slider can beactuated to and fro between a hot position, a cold position and at leastone intermediate position. In the hot position, the first slider canblock, in particular completely, the cold fluid flow of cold fluid, sothat expediently no fluid flows past it. In the cold position, the firstslider can block the hot fluid flow of hot fluid, so that expedientlyhere also no fluid flows past it. Lastly, in one of the intermediatepositions, the first slider can block the cold fluid flow of cold fluidand the hot fluid flow of hot fluid respectively partially. This has theeffect as a whole that by means of the first slider a volume flow or amass flow of one or more of the fluid flows which flow through the fluidchannel system, is able to be controlled or regulated.

The second slider, in particular also designated as reverse flow slider,forms, like the first slider, expediently a slider body. The slider bodyof the second slider can be produced from a plastic or from a metalmaterial or a composite material.

Furthermore, the slider body of the second slider can be of squareplate-shaped or rectangular plate-shaped or trapezoidal configuration orflat shape. This has the effect that a suitability for injectionmoulding production of the second slider is improved, but at leastassisted, so that the slider body of the second slider can be producedmore easily and/or more quickly within an injection moulding process.

The slider body of the second slider can extend in longitudinaldirection and width direction along two body axes which are aligned inan angled, in particular right-angled, manner to one another, whereinthe slider body extends in vertical direction along a body vertical axiswhich is aligned at right angles to the two body axes. Here, the sliderbody can be configured to be narrower in vertical direction than inlongitudinal direction and width direction. In particular, the sliderbody is only a few millimetres thick in vertical direction, whereas itis several millimetres thick in the longitudinal direction and widthdirection.

The slider body of the first slider can have, furthermore, four marginvertical edges which are aligned in a parallel manner or substantiallyparallel manner with respect to the body vertical axis. The marginvertical edges are connected to one another via margin longitudinaledges which are aligned respectively parallel or substantially parallelto the body axes. It has been found that it is advantageous: toconfigure a single margin vertical edge to be shorter in verticaldirection than the remaining margin vertical edges, furthermore toconfigure a single margin vertical edge to be longer in verticaldirection than the remaining margin vertical edges, furthermore toconfigure two margin vertical edges to be of equal length in verticaldirection or respectively longer in vertical direction than the shortestmargin vertical edge, and respectively shorter in vertical directionthan the longest margin vertical edge. Thereby a slider body geometry isdefined which has the advantageous effect of assisting a suitability forinjection moulding production of the second slider, so that inparticular the production suitability of the slider body of the secondslider is improved.

In any case, the slider body of the second slider can have a freecircumferential and flat cohesive edge. The latter can form ahoneycomb-like reinforcement or a labyrinth edge, in order to reinforcethe slider body of the second slider against external stresses, so thatthat the slider body of the second slider is reinforced against externalstresses and is therefore less deformable. The edge can have,furthermore, a plurality of honeycomb-like or box-like reinforcementelements for the reinforcing of the slider body.

Within the slider movement for setting a predetermined orpredeterminable temperature of the mixed fluid by mixing the fluidflows, the second slider can be actuated to and fro between a firstmixed position, a second mixed position and at least one intermediatemixed position, for instance like a temperature mixer valve. Here, thesecond slider in the first mixed position can close a cold orificeopening area of the cold channel in a fluid-tight manner, so that hotfluid flows out of the hot channel into the mixed channel. Furthermore,the second slider in the second mixed position can close a hot orificeopening area of the hot channel in a fluid-tight manner, so that coldfluid flows out from the cold channel into the mixed channel. In atleast one or all intermediate mixed positions of the second slider, thesecond slider is actuated between the first and second mixed position,so that the second slider closes a predeterminable or predetermined areaportion of the cold orifice opening area and a predeterminable orpredetermined area portion of the hot orifice opening area. This has theeffect that as a whole, fluid flows are mixed with one another in orderto be able to provide on the part of the user a mixed fluid with apredetermined or predeterminable temperature.

Again for both sliders, it is of interest that the heat exchanger of theventilation device can be formed by an in particular electricallyoperable heat-generating arrangement which is formed for the emitting ortransferring of thermal energy, in particular to one of the fluids, inorder to heat a fluid flowing through the fluid channel system.Furthermore, the heat exchanger can be formed by an in particularelectrically operable cold-generating arrangement, which is formed forthe receiving of thermal energy, in particular from one of the fluids,in order to cool a fluid flowing through the fluid channel system. Inorder to combine the advantages of the two arrangements with oneanother, provision can be made that the heat exchanger is formed by anin particular electrically operable temperature control arrangement,which is formed for the emitting and receiving of thermal energy, inparticular from one of the fluids, in order to optionally heat or cool afluid flowing through the fluid channel system.

As mentioned, the ventilation device can be equipped with at least oneguide arrangement for guiding respectively one of the two sliders withinthe slider movement. The guide arrangement can have a pair of guidestrips, assigned respectively to a single slider, which are arrangedlying opposite one another on the fluid channel system or on a wall ofthe fluid channel system or on the housing of the ventilation device.Expediently, a guide strip is formed from a pair of longitudinal ribswhich in turn are spaced apart transversely from one another at least insections with respect to their respective rib longitudinal axes andwhich are aligned parallel to one another with respect to theirrespectively rib longitudinal axis, and which are fixedly arranged onthe fluid channel system or on a wall of the fluid channel system or onthe housing. The longitudinal ribs can form, transversely with respectto the rib longitudinal axes, between them a clear slider edge receivingspace. Expediently, in order to realize the slider movement of therespective slider, at least two edge portions of the respective sliderinteract with the guide strips. In particular, respectively a singleedge portion of the respective slider is inserted in a sandwich-liemanner in a single slider edge receiving space of a guide strip on bothsides touching the longitudinal ribs in a dipping manner, so that therespective slider is able to be guided in a touching manner and free ofplay. Thereby, a transverse play of a slider relative to the fluidchannel system can be blocked in transverse direction to the slidermovement direction.

On the first and/or second slider, a pinion shaft, which is drivablerotationally in circumferential direction about its longitudinal axis,can be arranged respectively in a touching manner, in order to actuatethe respective slider within the slider movement. The pinion shaft canbe equipped with a counter-actuation arrangement, which is able to bebrought in a touching manner in engagement with the first and/or secondslider body.

One or both sliders can have an actuation arrangement, interacting witha counter-actuation arrangement arranged on a pinion shaft, foractuating the respective slider within the slider movement. Here, theactuation arrangement can have at least one longitudinal tooth row,which has teeth lined up adjacent to one another in a touching manner ina tooth longitudinal axis. The longitudinal tooth row can be arranged onor in the region of an edge or an edge portion and can be alignedparallel, in particular substantially parallel, to the respective edgeor to the respective edge portion. Accordingly, the counter-actuationarrangement can have counter-teeth.

Furthermore, provision can be made that at least one longitudinal toothrow, in operation of the ventilation device, dips at least in sectionsinto the slider edge receiving space. Here, at least one tooth can lieagainst a longitudinal rib in touching manner.

A single slider, or all sliders, can have a slider body which extendsrespectively with the formation of two large slider areas aligned inopposition to one another along two body axes aligned at right angles toone another in longitudinal direction and width direction. Therespective slider body extends expediently furthermore along a bodyvertical axis aligned at right angles to the body axes in verticaldirection, wherein the respective slider body has an externallycircumferential free end face connecting the large slider areas with oneanother. On one large slider area, two longitudinal tooth rows can bearranged, the tooth longitudinal axes of which are aligned parallel, inparticular substantially parallel to one another. The tooth longitudinalrows can be arranged with transverse distance to one another withrespect to their tooth longitudinal axes, wherein the tooth longitudinalrows are preferably arranged on or in the region of opposite edgeportions of the respective slider body, and wherein each toothlongitudinal row lies in a touching manner with all teeth in a touchingmanner on a longitudinal rib of the guide arrangement.

The teeth can form tooth crests and tooth troughs arranged alternatingwith respect to one another in the direction of the tooth longitudinalaxis. On a single one or on each or on every other tooth crest of atooth at least one protuberance element can be arranged. A protuberanceelement can respectively project away from the tooth in aprojection-like manner transversely to the slider movement direction ortransversely to a large slider area or transversely to one of the bodyaxes or in the direction of the body vertical axis.

In the operation of the ventilation device, at least one protuberanceelement can be inserted in a dipping manner at least partially into theslider edge receiving space, in order to lie in a touching manneragainst a longitudinal rib. In this context, it can be imagined that atleast one single or alternatively each protuberance element is arrangedintegrally on the respective tooth, or that at least one singleprotuberance element is formed by a hemispherical body, or that at leastone protuberance element lies against a longitudinal rib, touching in apunctiform, linear or flat manner.

Through the protuberance elements, a transverse play can be set betweenslider and guide arrangement, whereby for example a “rattling” of theslider can be supressed. For this reason, it is also desirable andadvantageous if a protuberance element is expediently configured sothat, in operation of the ventilation device, it dips at least partiallyinto the slider edge receiving space and lies against a longitudinal ribin a touching manner. By way of example, a protuberance element can bearranged or formed integrally on the respective tooth and be realizedhere as a hemispherical body. It is preferred if a protuberance elementcomes to abut with a longitudinal rib, touching in a punctiform, linearor flat manner.

It can be imagined that the protuberance element is produced fromplastic material or from a composite material and that the riblongitudinal axes and the slider movement direction are aligned parallelto one another, in particular substantially parallel to one another.

A further basic idea of the invention can lie in providing sliders for aventilation device. Corresponding sliders for a ventilation device, inparticular an air conditioning device, expediently an HVAC airconditioning device for a road motor vehicle, preferably for anelectrically drivable road motor vehicle, can be equipped respectivelywith a slider body which extends, with the formation of two large sliderareas aligned opposed to one another, along two body axes, aligned atright angles to one another, along the length and width, and whichextends vertically along a body vertical axis which is aligned at rightangles to the body axes. The slider body can have, furthermore, anexternally circumferential free end face connecting the large sliderareas with one another. On the slider body or on one of its large sliderareas, two separate longitudinal tooth rows can be arranged, whereineach longitudinal tooth row has teeth, lined up adjacent to one anotherin a touching manner in the direction of a tooth longitudinal axis. Eachlongitudinal tooth row can be arranged on or in the region of an edge oran edge portion of the respective slider and can be aligned parallel, inparticular substantially parallel, to the respective edge or to therespective edge portion. The tooth longitudinal axes of the longitudinaltooth rows can be aligned parallel, in particular substantiallyparallel, to one another, but also in an angled manner. In any case, itcan prove to be advantageous if the longitudinal tooth rows are arrangedwith respect to their tooth longitudinal axes with respect to oneanother with a transverse distance on the respective slider. Here, thetooth longitudinal rows can be arranged on or in the region of oppositeedge portions. Furthermore, the respective slider can have at least oneprotuberance element, which is arranged on one or on each tooth of alongitudinal tooth row, in particular in a materially bonded manner. Theprotuberance elements offer the advantage, in particular, that thetransverse play between the sliders and the guide arrangement can be setrelatively easily, whereby undesired intrusive noises during operationof the ventilation device can be prevented.

A further basic idea of the invention, which is able to be realizedadditionally or optionally to the above idea, consists in providing aventilation device, in particular an air conditioning device,expediently an HVAC air conditioning device, for a road motor vehicle,preferably for an electrically drivable road motor vehicle, which isequipped with a fluid channel system. The fluid channel system can haveat least one cold channel for the directing of a cold fluid flow of coldfluid, for example air, at least one hot channel for the directing of ahot fluid flow of hot fluid, for example air, and at least one mixedchannel, for the directing of a mixed fluid flow of mixed fluid. Themixed fluid, for example air, is provided from cold fluid and/or hotfluid. The ventilation device can have, furthermore, a sliderarrangement for the provision of mixed fluid of cold fluid and/or hotfluid, which comprises at least one slider which, within a slidermovement, is actuatable to and fro in particular between a hot position,a cold position and at least one intermediate position. The sliderarrangement can have, furthermore, a pinion shaft, drivable rotationallyabout its axial longitudinal axis, arranged expediently on the at leastone slider in a touching manner, which serves for the actuating of theat least one slider within the slider movement. For example, the pinionshaft is drivable rotationally by means of an actuator. The ventilationdevice can have, furthermore, a clamping arrangement, by means of whicha clamping to one another of a slider and pinion shaft is able to berealized, in particular can securely clamp slider and pinion shaft toone another in a touching and detachable manner within the slidermovement, for example in the hot position or in the cold position. Thiscan offer the advantage that in operation of the ventilation deviceexpediently in the hot position and/or in the cold position, a relativemovement between the slider and the pinion shaft, possibly bringingabout intrusive noises, can be prevented. The ventilation device cantherefore be configured as a whole to be operable relatively free ofintrusive noise. Furthermore, the clamping arrangement can be used forthe economical optimization of a mounting method for mounting the sliderarrangement of the ventilation device in a housing of the ventilationdevice. For this, one makes use of the fact that the slider and pinionshaft in the unmounted state can be clamped securely to one another bymeans of the clamping arrangement, so that they form, as it were, aslider-pinion shaft component. The slider-pinion shaft component canthen be moved within the mounting process as a cohesive unit, forexample into a predetermined or predeterminable installation positionwithin a housing of the ventilation device.

Expediently, the clamping device has a clamping element arranged on theslider and a counter-clamping element arranged on the pinion shaft. Itis preferred here if the clamping element and the counter-clampingelement are configured in a complementary manner, so that they can clampto one another with a clamping effect. Further expediently, the clampingelement and the counter-clamping element can be securely clamped to oneanother in a detachable manner, when they engage into one another in atouching manner in a form- and/or force fit under elastic widening ofthe clamping element or under elastic widening of the counter-clampingelement.

In order to realize the clamping with favourably priced means, theclamping element can have a pair of clamping fingers, or thecounter-clamping element can have a pair of clamping fingers. Theclamping fingers of a clamping element can protrude here respectivelyfrom the slider in an angled manner, in particular at right angles. Theindividual clamping fingers can describe here an individual anglebetween them and the slider. Alternatively, all the clamping fingers canrespectively describe the same angle between them and the slider.Furthermore, at least one clamping finger can be arranged integrally onthe slider, therefore in one piece. The slider can then be produced forexample in an injection moulding process, which is desirable especiallyfrom a financial point of view.

Furthermore, at least two clamping elements, spaced apart from oneanother, can define between them an in particular straight or curvedequipping axis, along which at least two clamping fingers are lined upadjacent to one another with a reciprocal spacing. The equipping axiscan be oriented here parallel, in particular substantially parallel, tothe longitudinal axis. It is possible, furthermore, that two or moreequipping axes are defined, which are oriented parallel to one anotherand respectively parallel, in particular substantially parallel, to thelongitudinal axis, wherein along each equipping axis at least twoclamping fingers of a clamping element are lined up adjacent to oneanother with reciprocal distance. Thereby, as it were, an entire row ofclamping elements can be provided, whereby as a whole the clampingfunction of the clamping arrangement is improved.

Furthermore, it is conceivable that the clamping fingers of acounter-clamping element protrude respectively in an angled manner, inparticular at right angles, from the pinion shaft. In this context, onecan also imagine that the clamping fingers are arranged integrally onthe pinion shaft, so that for the production of the pinion shaft, as inthe case of the slider, an injection moulding process presents itself,in order to be able to meet financial design wishes.

In any case, one or each clamping finger can have a continuouslyconstant finger cross-section with respect to its axial main axialextent, in particular the finger cross-section is aligned transverselyto the axial main axial extent. By way of example, the fingercross-section can be of round, oval or polygonal shape.

Furthermore, it has been found that the clamping element can have atleast one clamping body or alternatively that the counter-clampingelement can have at least one clamping body, which are provided tointeract in a clamping manner with respectively two or more clampingfingers. Here, the clamping bodies expediently protrude from the sliderin an angled manner, in particular at right angles, if they are arrangedas a clamping element on the slider. Alternatively, the clamping bodiesprotrude as counter-clamping element from the pinion shaft in an angledmanner, in particular at right angles, with respect to the longitudinalaxis. Here, it is advantageous from the point of view of mechanicalstability and producibility if the clamping bodies are arrangedrespectively integrally on the pinion shaft and/or on the slider.

The clamping bodies can be equipped with an entirely continuouslyconstant clamping body cross-section with respect to their respectivemain extent. The clamping body cross-section is in particular of round,oval or polygonal shape here. One can also imagine that the clampingbody has a continuously constant T-shaped T-clamping body cross-sectionwith respect to its main extent.

Furthermore, the clamping body can have a base body part and a centringprojection arranged thereon for the elastic widening of clamping fingersof a clamping element or counter-clamping element. The centringprojection serves preferably for the centring of the clamping element orof the counter-clamping element relative to the counter-clamping elementor clamping element. Preferably, the centring projection has a pair ofinsertion slope faces, aligned to one another in an angled, inparticular acute-angled, manner. On the base body part, two lateralprojections can be arranged which protrude to one side of the base bodypart in an angled manner, in particular at right angles, from the basebody part. The lateral projections can furthermore serve respectively asa stop for a clamping finger.

Between the clamping fingers, a clear intermediate clamping gap can beformed, into which the clamping finger is able to be inserted underwidening of the intermediate clamping gap and under elastic deflectionof the clamping fingers for the clamping of slider and pinion shaft toone another.

A further idea of the invention, which is able to be realizedadditionally or optionally to the above idea, consists in providing amounting method for ventilation devices. Within the mounting method formounting a slider arrangement of a ventilation device in a housing of aventilation device, firstly provision can be made to provide aventilation device as follows:

with a housing and a fluid channel system of a cold channel for thedirecting of a cold fluid flow of cold fluid, a hot channel for thedirecting of a hot fluid flow of hot fluid and a mixed channel fordirecting a mixed fluid flow of mixed fluid provided from cold fluidand/or hot fluid,

with a slider arrangement for the providing of mixed fluid of cold fluidand/or hot fluid,

wherein the slider arrangement has at least one slider, which within aslider movement is able to be actuated to and fro between a hotposition, a cold position and at least one intermediate position,

wherein the slider arrangement has a pinion shaft, drivable rotationallyin circumferential direction about its longitudinal axis, arranged onthe slider in a touching manner, for actuating the slider within theslider movement,

wherein the ventilation device has a clamping arrangement for thetouching, detachable clamping of slider and pinion shaft to one another,

wherein the clamping arrangement has a clamping element arranged on theslider and a counter-clamping element arranged on the pinion shaft. Themounting method can comprise the following steps:

1) Within a preparation step for mounting, the slider and the pinionshaft are detachably clamped to one another in a touching manner bymeans of the clamping arrangement, so that the slider and the pinionshaft are not detachable from one another unintentionally,

2) Mounting of the unit of slider and pinion shaft in or on the housingof the ventilation device,

3) Releasing of the clamping between slider and pinion shaft, so thatthe slider is actuatable by means of the pinion shaft within the slidermovement.

A further idea of the invention, which is able to be realizedadditionally or optionally to the above idea, consists in providing amethod for operating a ventilation device. A ventilation device for thispurpose can have the following:

a housing and a fluid channel system of a cold channel for the directingof a cold fluid flow of cold fluid, a hot channel for the directing of ahot fluid flow of hot fluid and a mixed channel for the directing of amixed fluid flow of mixed fluid provided from cold fluid and/or hotfluid,

a slider arrangement for the providing of mixed fluid of cold fluidand/or hot fluid, which has at least one slider, which within a slidermovement is actuatable to and fro between a hot position, a coldposition and at least one intermediate position,

wherein the slider arrangement has a pinion shaft, drivable rotationallyin circumferential direction about its longitudinal axis, arranged in atouching manner on the slider, for actuating the slider within theslider movement,

wherein the ventilation device has a clamping arrangement for thetouching, detachable clamping to one another of slider and pinion shaft,

wherein the clamping arrangement has a clamping element arranged on theslider and a counter-clamping element arranged on the pinion shaft,

preferably comprising the steps:

1) Actuating the slider by means of the pinion shaft within the slidermovement into the hot position or the cold position, wherein the sliderand the pinion shaft in the hot position or in the cold position arerespectively detachably clamped securely to one another in a touchingmanner by means of the clamping arrangement, so that the slider and thepinion shaft in the respective position are not detachable from oneanother unintentionally,

2) Actuating the slider by means of the pinion shaft within the slidermovement into one of the intermediate positions, wherein the clampingarrangement is released.

A further basic idea of the invention, which is able to be realizedadditionally or optionally to the above idea, can lie in counteractingan intrusive noise development, caused inter alia by weightoptimization, on or through the slider and/or on or through the pinionshaft in operation of the ventilation device by means of a blockingarrangement, as it were an acoustic blocking arrangement, arranged on aslider or in the region of a slider and/or on the pinion shaft. Inoperation of the ventilation device, thereby practically no acousticintrusive noises are generated.

For this, a ventilation device, in particular an air conditioningdevice, expediently an HVAC air conditioning device, can be provided fora road motor vehicle, preferably for an electrically drivable road motorvehicle, with a fluid channel system. The fluid channel system can haveat least one cold channel for the directing of a cold fluid flow of coldfluid, for example air, at least one hot channel for the directing of ahot fluid flow of hot fluid, for example air, and at least one mixedchannel for the directing of a mixed fluid flow of mixed fluid. Themixed fluid, for example air, can be provided from cold fluid and/or hotfluid. The ventilation device can have, furthermore, a sliderarrangement for the providing of mixed fluid of cold fluid and/or hotfluid, which comprises at least one slider which, within a slidermovement, is actuatable to and fro in particular between a hot position,a cold position and at least one intermediate position. The sliderarrangement can have, furthermore, a pinion shaft, rotationally drivablein circumferential direction about its axial longitudinal axis,expediently arranged in a touching manner on the slider, which servesfor the actuating of the slider within the slider movement. For example,the pinion shaft is rotationally drivable by means of an actuator. Theventilation device can have, furthermore, a blocking arrangement, whichis arranged in a sandwich-like manner between the slider and the pinionshaft and defines a sealing gap between the slider and the pinion shaft,which blocks a bypass fluid flow of mixed fluid and/or of cold fluidand/or of hot fluid, in order to prevent or reduce acoustic intrusivenoises produced in operation of the ventilation device by the bypassfluid flow on the slider or on the pinion shaft. This offers theadvantage that ventilation devices are able to be operated relativelyfree of intrusive noise, which is of interest in particular inelectrically operable road motor vehicles, before there furtherintrusive noise sources, acting in an acoustically overlaying manner,such as for instance a combustion engine, are absent.

Expediently, the blocking arrangement can have one or more blockingribs, which are arranged on the slider in a touching manner or a formedintegrally on the slider, therefore are embodied in one piece with theslider. A sealing gap is formed between a free rib edge of the blockingrib and the pinion shaft, in particular between a circular-cylindricalstem body of the pinion shaft. Through blocking ribs, a relativelyfavourably priced way is described to realize a blocking arrangement.Thereby, a blocking arrangement can be realized with economicallyjustifiable expenditure on a ventilation device.

Preferably, the blocking arrangement can have only one or morecounter-blocking ribs, which are arranged in a touching manner on thepinion shaft or are formed integrally on the pinion shaft, thereforeembodied in one piece with the pinion shaft. In this case, a sealing gapis formed between a free counter-rib edge of the counter-blocking riband the slider, in particular a flat slider body of the slider.

In particular, the blocking arrangement can have one or more blockingribs and one or more counter-blocking ribs. Each blocking rib can bearranged in a touching manner on the slider or formed integrally on theslider, therefore embodied in one piece with the slider. Eachcounter-blocking rib can be arranged, in turn, in a touching manner onthe pinion shaft or formed integrally on the pinion shaft, thereforeembodied in one piece with the pinion shaft. A sealing gap isexpediently formed between a single blocking rib and a singlecounter-blocking rib, expediently between a free rib edge of therespective blocking rib and a free counter-rib edge of the respectivecounter-blocking rib.

It is expedient if the blocking arrangement of the ventilation device isequipped with sealing means, in order to cover the formed sealing gap,so that a bypass fluid flow can be practically completely prevented.This has the advantage that no intrusive noises can occur. Expediently,the sealing means can be arranged on the blocking rib, in particular onits free rib edge, or on the counter-blocking rib, again in particularon its free counter-rib edge, in order to expediently seal the sealinggap in a fluid-tight manner.

The sealing means themselves can be formed by an elastic sealing lip.The sealing lip can have a root portion, by means of which the sealinglip is arranged in a touching manner, for example glued on, on theblocking rib, in particular on its free rib edge, or on thecounter-blocking rib, in particular on its free counter-rib edge.Furthermore, the sealing lip can have a tongue portion, which isrealized for example on an end of the sealing lip opposed to the rootportion. The tongue portion can lie in a touching manner on a blockingrib, spaced apart from the root portion, in particular on its free ribedge, or on a counter-blocking rib, spaced apart from the root portion,in particular on its free counter-rib edge, in a touching and gap-freemanner, in order to cover the sealing gap, so that a bypass fluid flowcan be practically completely prevented. The tongue portion can beconfigured to be tapering in the direction from the root portion towardsits free tongue portion end, in a way that the sealing lip is configuredto be relatively thick at the root portion and to be relatively thin atthe free tongue portion end of the tongue portion.

Further expediently, provision is made that a blocking rib and/or acounter-blocking rib is formed from a single-piece or multi-part flatbody, which expediently has two large areas, oriented opposed to oneanother, in particular oriented substantially opposed to one another,and one end face which is circumferential and connecting the large areasto one another. Thereby, a possible physical configuration of a blockingrib and/or of a counter-blocking rib is described, wherein of coursevariant configurations can be imagined. Furthermore, the flat bodies canbe produced from a plastic material or from a composite material.Expediently, the flat bodies or respectively the blocking rib and/or acounter-blocking rib are produced from the same material as the slider,namely in particular from a plastic material or a composite material.

In particular, the slider can have a slider body which extends along twobody axes aligned at right angles to one another, as it were along thelength and width. Here, the slider body can have an externallycircumferential free edge, wherein at least one blocking rib and/or onecounter-blocking rib is arranged parallel, in particular substantiallyparallel, or in an angled manner to a section of the edge designated asedge portion on the slider body. It is also conceivable that a blockingrib and/or a counter-blocking rib is arranged parallel, in particularsubstantially parallel or in an angled manner with respect to one of thebody axes.

Expediently, two or more blocking ribs and/or two counter-blocking ribscan be arranged parallel, in particular substantially parallel, to oneanother.

Furthermore, the opposite large areas of two adjacent blocking ribsand/or of two adjacent counter-blocking ribs can be arranged parallel toone another, in particular substantially parallel, but also in an angledmanner to one another.

Furthermore, the slider can have a plate-shaped or cuboid-shaped sliderbody, which extends along two body axes aligned at right angles to oneanother, along the length and width, wherein a body plane is spannedbetween the body axes. The blocking arrangement can comprise at leastone blocking rib arranged on the slider body, which protrudes from theslider body in an angled manner, in particular at right angles ortransversely, to the body plane.

The blocking arrangement preferably has at least one blocking rib and/ora counter-blocking rib, which is realized as a single-component 1 Kcomponent. This has the advantage that a blocking rib and/or acounter-blocking rib can be produced at a relatively favourable cost,for example within an injection moulding process.

It is possible that the blocking arrangement has at least one sawtoothrow, which is formed from sawteeth lined up adjacent to one another in atouching manner in a stacking direction. The sawtooth row can bearranged here on or in the region around a circumferential free edge ofa slider body of the slider and parallel, in particular substantiallyparallel, to a blocking rib and/or a counter-blocking rib. Inparticular, in interaction with a blocking rib and/or a counter-blockingrib, a sawtooth row can contribute to a reduced formation of intrusivenoise on the slider, in particular because fluid flowing along theslider is eddied, whereby the fluid flow speeds result in beingrelatively low and thereby vibration effects on the slider result inbeing less intensive.

Expediently, in the hot position the slider closes a cold orificeopening area of the cold channel, so that hot fluid can flow out of thehot channel into the mixed channel. In the cold position, the slidercloses a hot orifice opening area of the hot channel, so that cold fluidflows out of the cold channel into the mixed channel. Furthermore, in atleast one intermediate position between the cold position and the hotposition, the slider can close a predeterminable or predetermined areaportion, for example indicated in m², of the cold orifice opening areaof the cold channel and a predeterminable or predetermined area portion,for example indicated in m², of the hot orifice opening area of the hotchannel, so that hot fluid can flow out of the hot channel and coldfluid can flow out of the cold channel in a predeterminable orpredetermined volume mixture ratio into the mixed channel. Furthermore,the slider can have an actuation arrangement for actuating the sliderwithin the slider movement, for example a pinion shaft or a rack profileor teeth lined up adjacent to each other, wherein on the pinion shaft atleast one counter-actuation arrangement, in particular a tooth profile,cooperating in particular with the pinion shaft or with the rackprofile, is arranged. The counter-actuation arrangement projects heretransversely to the longitudinal axis over the pinion shaft and, inoperation of the ventilation device, interacts in a touching manner withthe actuation arrangement of the slider for actuating the slider withinthe slider movement. Here, the pinion shaft, the slider, the actuationarrangement and the counter-actuation arrangement can delimit betweenthem a clear passage into which, proceeding from the slider and/or fromthe pinion shaft, a blocking rib and/or a counter-blocking rib projectwith formation of the sealing gap. This has the effect that the clearpassage is closed, is sealed as it were. This has the advantage thatpractically no fluid can flow between the pinion shaft and the slider,whereby an intrusive noise formation is prevented.

A further basic idea of the invention, which is able to be realizedadditionally or optionally to the above idea, can lie in providing anoptimized pinion shaft for a ventilation device. For this, a ventilationdevice, in particular an air conditioning device, expediently an HVAVair conditioning device, can be provided for a road motor vehicle,preferably for an electrically drivable road motor vehicle, with a fluidchannel system. The fluid channel system can have at least one coldchannel for directing a cold fluid flow of cold fluid, for example air,at least one hot channel for directing a hot fluid flow of hot fluid,for example air, and at least one mixed channel for directing a mixedfluid flow of mixed fluid. The mixed fluid, for example air, can beprovided from cold fluid and/or hot fluid. The ventilation device canhave, furthermore, a slider arrangement for the providing of mixed fluidof cold fluid and/or hot fluid, which comprises at least one slider,able to be actuated to and fro within a slider movement, in particularbetween a hot position, a cold position and at least one intermediateposition. The slider arrangement can have a pinion shaft, drivablerotationally in circumferential direction about its axial longitudinalaxis, expediently arranged on the slider in a touching manner, whichserves for actuating the slider within the slider movement. For example,the pinion shaft is drivable rotationally by means of an actuator. Theventilation device can have a bar extension which is arranged on thepinion shaft in order to widen or respectively lengthen the latter inthe direction of the longitudinal axis. The bar extension can therebyserve for example as rotational actuation for the pinion shaft or can beused within a pinion shaft mounting operation for handling the pinionshaft. This offers the advantage that the pinion shaft can be actuatedrelatively easily or respectively can be moved within a mountingoperation relatively easily, for example manually by hand or in anautomated manner by means of automation arrangements.

Expediently, the pinion shaft can have a stem body, wherein on at leastone free stem end of the stem body an equipping area is formed, on whichthe bar extension is arranged.

Further expediently, the bar extension can define an axial bar extensionlongitudinal axis along its main extent, wherein the bar extensionlongitudinal axis and the longitudinal axis of the pinion shaft arealigned coaxially to one another. An angled arrangement of the barextension on the pinion shaft is conceivable, however it has been foundthat the coaxial arrangement enables a far better manageability.

In order to remove the bar extension from the pinion shaft after themounting of the pinion shaft relatively easily and without an additionaltool, at least one predetermined breaking portion can be formed betweenthe bar extension and the pinion shaft, which enables the removing ofthe bar extension from the pinion shaft, as desired.

In particular, the predetermined breaking portion can be realized as across-section narrowing. Here, at least one single predeterminedbreaking cross-section of the predetermined breaking portion can beconfigured to be small area-wise with respect to each bar extensioncross-section of the bar extension and with respect to each pinion shaftcross-section of the pinion shaft.

Further in particular the predetermined breaking portion can be realizedas a material weakening portion, wherein the material characteristics ofthe predetermined breaking portion are realized in a manner promotingpredetermined breaking with respect to the material characteristics ofthe regions on the pinon shaft and on the bar extension immediatelysurrounding the predetermined breaking portion. Promoting predeterminedbreaking means in this context that in particular the mechanicalmaterial characteristics in the predetermined breaking portion arecomparatively poor or that expediently a mechanically weaker resistanceexists than in the regions of the pinion shaft and of the bar extensionsurrounding the predetermined breaking portion.

Expediently, the bar extension can be arranged on the pinion shaft in amaterially bonded and/or force-fitting and/or form-fitting manner.Thereby, it is ensured that the bar extension is always fixed securelyon the pinion shaft, in particular also in the case of stresses within amounting operation, and is not detached from the pinion shaftunintentionally.

Further expediently, the bar extension and the pinion shaft can beembodied in one piece, therefore integrally. For this, for example aninjection moulding process presents itself, within which a one-piece barextension/pinion shaft component can be produced at a favourable cost.

The bar extension can have a base body which is configuredhollow-cylindrically or cylindrically. The base body can have, at eachlocation along its bar extension longitudinal axis, circular,circular-ring-shaped, oval, oval-ring-shaped or polygonal basecross-section areas which are constant area-wise. Basically, one canalso imagine that the base cross-section areas change along the barextension longitudinal axis, for example the base cross-section areascan become smaller area-wise with increasing distance from the pinionshaft, when the bar extension is arranged on the pinion shaft, so that acone-like base body is formed, converging in a manner tapering towardsthe exterior.

Furthermore, on an outer shell surface of the bar extension, functionalelements, preferably tooth flanks or suchlike, can be arranged, spacedapart from one another in circumferential direction around the pinionshaft. In particular, a tool can engage in a touching manner onto therotatingly circumferential functional elements. One can also imaginethat an actuator is arranged on the functional elements, in order toactuate the pinion shaft.

At least one of the two sliders can have a mounting aid arrangement forassisting the mounting of the respective slider within the housingand/or within the fluid channel system. The mounting aid arrangementexpediently comprises a single, two, three and preferably four mountingprojections which are arranged in a materially bonded or force- andform-fitting manner on the slider body of the respective slider. It hasbeen found that preferably hemispherical mounting projections can beadvantageous. In any case, provision is made that within a mountingoperation of the slider by means of an end effector mounted on amounting robot, all the mounting projections of the mounting aidarrangement can be grasped, in order to hold and move the slider, inparticular in order to position the slider within the housing and/orwithin the fluid channel system. One can also imagine that one graspsthe mounting projections of the mounting aid arrangement by hand or witha hand tool, in order to hold or move the slider. Expediently, all themounting projections project away from the slider in vertical directionalong a body vertical axis aligned at right angles to the two body axesspanning the slider.

In summary, it remains to state: The present invention preferablyrelates to a ventilation device, with a fluid channel system, with aslider arrangement for the providing of mixed fluid of cold fluid and/orhot fluid, wherein the slider arrangement has at least two sliders whichare actuatable to and fro respectively within a slider movement, whereinthe slider arrangement has a pinion shaft, arranged in a touchingmanner, drivable rotationally in circumferential direction about itslongitudinal axis, for actuating the respective sliders.

Further important features and advantages of the invention will emergefrom the subclaims, from the drawings and from the associated figuredescription with the aid of the drawings.

It shall be understood that the features mentioned above and to beexplained further below are able to be used not only in the respectivelyindicated combination, but also in other combinations or in isolation,without departing from the scope of the present invention.

Preferred example embodiments of the invention are illustrated in thedrawings and are explained more closely in the following description,wherein the same reference numbers refer to identical or similar orfunctionally identical components.

BRIEF DESCRIPTION OF THE PREFERRED EMBODIMENTS

There are shown, respectively schematically,

FIG. 1a shows, in a perspective view, a longitudinal section of anexample embodiment of a ventilation device with sliders and pinionshafts of a slider arrangement,

FIG. 1b shows, in a sectional view, a longitudinal section of a furtherexample embodiment of a ventilation device,

FIG. 1c shows a perspective view of a further example embodiment of aventilation device with a slider and with a pinion shaft,

FIG. 2a shows a perspective view of a slider of a first sliderconstruction of a first variant of the slider with a pinion shaft,

FIG. 2b shows a perspective view of a slider with a second sliderconstruction of a first variant of the slider, but without pinion shaft,so that the slider can be seen better,

FIG. 2c shows a front view of the slider according to FIG. 2b accordingto an arrow IIc recorded in FIG. 2b , but now with pinion shaft,

FIG. 2d shows a perspective view of a slider in a first sliderconstruction of a second variant of the slider, without pinion shaft,

FIG. 2e shows a front view of the slider according to FIG. 2d accordingto an arrow IIe recorded in FIG. 2d , but now with pinion shaft,

FIG. 3 shows, in a sectional view of the ventilation device of FIG. 1caccording to a section plane illustrated by dashed lines and in aviewing direction of an arrow IIIa recorded in FIG. 1c , a slideraccording to the first slider construction of the first variant of theslider and a pinion shaft,

FIG. 4 shows, in a sectional view of the ventilation device of FIG. 1caccording to a section plane illustrated by dashed lines and in aviewing direction of an arrow IIIa recorded in FIG. 1c , a slideraccording to the first slider construction of the second variant of theslider and a pinion shaft,

FIG. 5 shows a sectional view of a part of the pinion shaft of theventilation device, in section according to a section plane recorded inFIG. 2a by dashed lines, with viewing direction of an arrow IV recordedin FIG. 2 a,

FIGS. 6 to 9 show, in several section views respectively, a variant of apinion shaft in section according to a section plane which is notillustrated,

FIG. 10 shows a perspective view of a preferred further exampleembodiment of a ventilation device with slider arrangement,

FIG. 11 shows, in a top view, a pinion shaft of FIG. 10 according to anarrow XI recorded there, wherein a slider is removed,

FIG. 12 shows, in a top view, a clamping arrangement of FIG. 10according to an arrow XII recorded there, wherein a slider and a pinionshaft is removed for better visibility,

FIG. 13 shows, in a perspective view, a preferred further exampleembodiment of a slider with protuberance elements.

DETAILED DESCRIPTION

FIGS. 1a to 13 show as a whole preferred example embodiments of aventilation device 1, 200 which is preferably used for the ventilatingor respectively air conditioning of a motor vehicle interior of a roadmotor vehicle, in particular on or in an electrically drivable roadmotor vehicle. In so far as components with identical or at leastsimilar function are present in the example embodiments, identicalreference numbers were assigned, in order to avoid repetitions.

FIG. 1a shows by way of example a longitudinal section of a firstexample embodiment of a ventilation device 200 in a perspective view.FIG. 1b shows a longitudinal section of a further example embodiment ofa ventilation device 200. The ventilation device 200 has a housing 201,which accommodates in the interior two or more guidably arranged sliders202 a, 202 b and pinion shafts 215 of a slider arrangement 204 of theventilation device 200. It can be seen furthermore that the housing 201of the ventilation device 200 has or forms a fluid channel system 2,through which fluid can flow in the directions indicated by arrows inFIG. 1b . The fluid channel system 2 has or delimits a cold channel 3, ahot channel 6 and a mixed channel 9. The cold channel 3 serves for thedirecting of a cold fluid flow 4 of cold fluid 5, the hot channel 6serves for the directing of a hot fluid flow 7 of hot fluid 8, and themixed channel 9 serves for the directing of a mixed fluid flow 10 ofmixed fluid 11, wherein the mixed fluid 11 is provided from cold fluid 5and/or hot fluid 8. By way of example, in the cold channel 3 and/or inthe hot channel 6 a heat exchanger 223 can be arranged, for example theheat exchanger 223 can form a cold-generating arrangement or aheat-generating arrangement, which are not illustrated, by means ofwhich the fluid in the respective channel 3, 6, 9 is able to be cooledor heated as desired. The two sliders 202 a, 202 b according to FIGS. 1aand 1b serve to control one or more of the fluid flows 4, 7, 10 throughthe fluid channel system 2 according to a predetermined orpredeterminable volume flow or mass flow, and to set for this apredetermined or predeterminable temperature of the mixed fluid 11 bymixing. Here, it has been found that it is advantageous to optimize thetwo sliders 202 a, 202 b constructively according to functional pointsof view, namely so that the one first slider 202 a is relatively wellsuited for the setting of a volume flow or mass flow of the respectivefluid flow, and the other, second, slider 202 b is relatively wellsuited for the mixing of the fluid flows 4, 7, 10 and for the setting ofa temperature of the mixed fluid 11. Hereby, one obtains a first slider202 a, especially configured for the volume flow-dependent or massflow-dependent controlling of the fluid flows 4, 7, 10, which inspecialist circles is also designated as forward flow slider, and asecond slider 202 b, suitable for the providing of mixed fluid 11 of apredetermined or predeterminable temperature, which in the correspondingspecialist circles is known as reverse flow slider. The sliders 202 a,202 b are guidably mounted in the housing 201 or within the fluidchannel system 2 of the ventilation device 200 via a guide arrangement55, not described in further detail, respectively separately, thereforeindependently of one another, so that the sliders 202 a, 202 b aremovable respectively independently of one another and within a slidermovement 14 indicated in FIGS. 1a and 1b respectively by double arrows.Expediently, the first slider 202 a, therefore the forward flow slider,can be actuated to and fro here between a hot position 15, a coldposition 16, an intermediate position 17 (not illustrated). Expediently,the second slider 202 b, therefore the reverse flow slider, can beactuated to and fro here between a first mixed position 220, a secondmixed position 221 and an intermediate mixed position 222 (notillustrated). The different positions 15, 16, 220, 221 are indicated byway of example in FIG. 1 b.

The slider arrangement 204 has, in addition to the first slider 202 aand the second slider 202 b, by way of example two pinion shafts 215,which are arranged respectively in a touching manner on one of the twosliders 202 a, 202 b, see FIGS. 1a and 1b . The pinion shafts 215 of theslider arrangement 204 are respectively of cylindrical shape and have asubstantially cylindrical stem body 224, the cross-section of which isconfigured to be continuously round or oval or polygonal. The pinionshafts 215 are configured to be rotationally drivable in acircumferential direction 225 about a longitudinal axis 229 defined bythe respective pinion shaft 215 or respectively by its stem body 224, inorder to be able to drive the respective slider 202 a, 202 b within therespective slider movement 14, see in particular FIG. 1a . For example,for driving the pinion shafts 215 a single shared or respective aseparate actuator 226 can be arranged on the housing 201 of theventilation device 200 and can be drivingly connected with the pinionshafts 215, see in particular Fig. la, where by way of examplerespectively a separate actuator 226 is provided. The actuators 226 canbe actuated and/or regulated expediently via a control, which is notillustrated.

Furthermore, the pinion shafts 215 are applied respectively in atouching manner on the sliders 202 a, 202, so that by means of thepinion shafts 215 an actuating of the respective slider 202 a, 202 b ispossible within the respective slider movement 14. In this context, itcan be seen in particular in FIG. 1a that each slider 202 a, 202 b hasan actuation arrangement 227, in particular respectively a pair ofpinion shafts or tooth rows, by means of which the respective slider 202a, 202 b is able to be actuated within the respective slider movement14. The actuation arrangements 227 of the sliders 202 a, 202 bexpediently interact in a touching manner respectively with acounter-actuation arrangement 228, in particular respectively with apair of toothed wheels or pinions, arranged on one of the pinion shafts215 and configured in a complementary manner to the actuationarrangements 227. The counter-actuation arrangements 228 projectexpediently transversely or in an angled manner to the respectivelongitudinal axis 229 over the stem body 224 of the respective pinionshaft 215, so that, in operation of the ventilation device 200, they caninteract in a touching manner with the actuation arrangement 227 withinthe slider movement 14, without the respective stem body 224 touchingthe respective slider 202 a, 202 b.

FIG. 1c shows a further example embodiment, namely by way of example aventilation device 1 in a perspective view, wherein the ventilationdevice 1 is equipped with a housing 53, with a fluid channel system 2and with a slider arrangement 12, as in the preceding exampleembodiments. The housing 53 has or delimits a fluid channel system 2 ofa cold channel 3, a hot channel 6 and a mixed channel 9, likewise as inthe preceding example embodiment. The cold channel 3 serves for thedirecting of a cold fluid flow 4 of cold fluid 5, the hot channel 6serves for the directing of a hot fluid flow 7 of hot fluid 8 and themixed channel 9 serves for the directing of a mixed fluid flow 10 ofmixed fluid 11, wherein the mixed fluid 11 is provided from cold fluid 5and/or hot fluid 6, see in particular FIG. 1c . By way of example, inthe fluid channel system 2 a heat exchanger 223 can be installed, whichin the cold channel 3 forms a cold-generating arrangement, which is notillustrated, and in the hot channel 6 forms a heat-generatingarrangement, which is not illustrated, so that fluid is able to becooled or able to be heated in the respective channel 3, 6 as desired.The slider arrangement 12 serves again for the providing of mixed fluid11 of cold fluid 5 and/or hot fluid 8, in particular for the mixing ofcold fluid 5 with hot fluid 8. For this purpose, the slider arrangement12, in contrast to the preceding example embodiment, has a singleslider, designated by the reference number 13, and a pinion shaft 18.The slider 13, which can concern either a forward flow slider or areverse flow slider or a combination of forward flow and reverse flowslider, is guidably mounted in the housing 53 via a guide arrangement55, not described in further detail, so that the slider 13 is actuatableto and fro, within a slider movement 14, indicated in particular by adouble arrow in FIG. 1c , between a hot position 15, a cold position 16and at least one intermediate position 17, wherein the differentpositions 15, 16 are indicated by way of example in FIG. 3.

The pinion shaft 18 of the slider arrangement 12, able to be seen inparticular in FIG. 1c , is of cylindrical shape and has a substantiallycylindrical stem body 26, the cross-section of which is configured to becontinuously round or oval or polygonal. The pinion shaft 18 isconfigured to be rotationally drivable in a circumferential direction 19about a longitudinal axis 20 defined by the pinion shaft 18 orrespectively by its stem body 26, as in the first example embodiment.For example, for driving the pinion shaft 18 an actuator 54 can bearranged on the housing 53 of the ventilation device 1 and can bedrivingly connected to the pinion shaft 18, as in the first exampleembodiment, see in particular FIGS. 1a and/or 1 c. The actuator 54 canbe expediently actuated and/or regulated via a control 56, according toFIG. 1c the control 56 is advantageously integrated into the actuator54. Furthermore, the pinion shaft 18 is applied in a touching manner onthe slider 13, so that by means of the pinion shaft 18 an actuation ofthe slider 13 is possible within the slider movement 14.

In this context, it can be seen in particular in FIG. 1c , that theslider 13 has an actuation arrangement 47, in particular a pair ofpinion shafts or tooth rows, by means of which the slider 13 isactuatable within the slider movement 14. The actuation arrangement 47interacts here with a counter-actuation arrangement 48, in particularwith toothed wheel or a pinion, arranged on the pinion shaft 18 andconfigured in a complementary manner to the actuation arrangement 47.The counter-actuation arrangement 48 expediently projects transverselyor in an angled manner to the longitudinal axis 20 over the stem body 26of the pinion shaft 18 so that, in operation of the ventilation device1, it can interact in a touching manner with the actuation arrangement47 for the actuating of the slider 13 within the slider movement 14.

As indicated above, the sliders 13, 202 a, 202 b according to the twoabove example embodiments can basically be provided in two differentvariants, namely either as forward flow slider or as reverse flowslider. Each variant can comprise further slider constructions. By meansof FIGS. 2a, 2b and 2c , the function and configuration of the firstvariant of the slider 13 or respectively of the slider 202 a, designatedas forward flow slider, will be explained below. The described firstvariant of the slider 13 or respectively of the slider 202 a can be usedin two different slider constructions.

The slider 13 designated as forward flow slider or respectively firstslider 202 a according to the first variant has basically a slider body29, which is, for example, of cuboid-like or trapezoidal shape. Theslider body 29 can preferably be produced from a plastic or, as one canalso at least imagine, from a metal material. The slider 13 designatedas forward flow slider or respectively first slider 202 a servesespecially for the volume flow-dependent or mass flow-dependentcontrolling of the fluid flows 4, 7, 10 through the ventilation device1, 200. Preferably, the slider 13 or respectively the first slider 202 ais arranged upstream, therefore in the fluid flow before, the heatexchanger 223.

In FIG. 2a one can see a perspective view of a first slider constructionof the first slider 13, 202 a according to the first variant of theslider 13, 202 a with a pinion shaft 18, 215 lying in a touching manneron the slider 13, 202a. The first slider 13, 202 a has here an inparticular substantially plate-shaped slider body 29, which extendsalong two body axes 35, 36, along the length and width, aligned in anangled manner, in particular at right angles, to one another, see inparticular FIG. 2a . The body axes 35, 36 can span between them a bodyplane 40, in which the slider body 29 lies.

The slider body 29 extends vertically along a body vertical axis 95aligned orthogonally to the body axes 35, 36. In the direction of thebody vertical axis 95, however, it is configured to be relatively shortcompared to the extent along the length and width. The slider body 29defines a circumferential, free and flat cohesive edge 39. The firstslider construction of the first variant of the slider 13, 202 a isdistinguished by an edge 39, reinforced in a honeycomb-like manner,which could also be designated as reinforcement 233 or labyrinth edge234, see FIG. 2a . As indicated, the reinforcement 233 or the labyrinthedge 234 has a plurality of honeycomb-like or box-like configurationelements 234, which are arranged for the reinforcing of the slider body29 along the slider body 29, there in particular directly on the edge39. Expediently, the individual honeycomb-like or box-like configurationelements 235 have respectively a circumferential wall and an opening,the orifice area of which points in the direction of the body verticalaxis 95 away from the slider body 29. Furthermore, the slider body 29 inthe direction of the body vertical axis 95, is embodied to be relativelystrong or respectively thick, in particular compared to the followingsecond slider constructions of the first variant, namely a fewmillimetres thick, in particular 1 mm, 2 mm or 3 mm thick, so that itcan be stated that the edge 39 forms a relatively thick edge 39. Theedge 39, in particular compared to the following second sliderconstructions of the first variant, is relatively rigid and offersrelatively great resistance against deformation, for example against apressure load deformation.

The second slider construction of the first variant of the slider 13,202 a according to FIGS. 2b and 2c , has likewise a slider body 29,which as above extends along the width and length along body axes 35,36. In contrast to the labyrinth edge 39 explained above, the secondslider construction of the first variant of the slider 13, 202 a isdistinguished by a C-shaped or U-shaped tapering edge 39, which comparedto the edge 39 of the first slider construction of the first variant ofthe slider 13, 202 a is configured to be relatively thin and/or flat andis designated as arched edge 232. The slider body 29 is therefore by wayof example only a few millimetres thick in the direction of the bodyvertical axis 95, for example 0.2 mm, 0.5 mm or 0.9 mm or 1 mm, so thatit can be stated that the edge 39 forms a relatively flat edge 39. Thishas the advantageous effect that the slider body 29 as a whole isrelatively flexible and lightweight.

For the sake of completeness, it is also mentioned that it can be seenfurthermore in FIGS. 2a, 2c, 2e that the respective pinion shaft 18, 215has a counter-actuation arrangement 38, 228 which is able to be broughtinto engagement with an actuation arrangement 47, 227 of the respectiveslider 13, 202 a, 202 b, and furthermore is equipped with a barextension 57, which by way of example is joined onto a free stem end 58of the stem body 26, 224. For example, the actuator 54, 226 can engagedrivingly onto the bar extension 57. The bar extension 57 can beequipped externally circumferentially with functional elements 67, forexample tooth flanks or suchlike. Alternatively or additionally, the barextension 57 can be used for mounting purposes, for example as insertionaid for the pinion shaft 18, 215 into recesses arranged on the housing53, 201. With respect to the bar extension 57, reference is to be madeat this point to the description concerning FIGS. 4 to 7, where it isdescribed in more detail how the bar extension 57 is configured.

With the aid of FIGS. 2d and 2e , the function and configuration isfurther explained of a second variant of the slider 13, designated asreverse flow slider, or respectively of the second slider 202 b. Thedescribed second slider 13, 202 b is presented only in a single sliderconstruction, but can of course have the modifications, described above,according to the first and second slider constructions of the firstvariant of the slider 13, 202 a.

The slider 13, designated as reverse flow slider, or respectively secondslider 202 b has basically a slider body 29, which is for example ofcuboid-like or trapezoidal configuration. The slider body 29 canpreferably be produced from a plastic or, as can also be at leastimagined, from a metal material. The slider 13, 202 b, designated asreverse flow slider, serves in operation of the ventilation device 1,200 as a temperature mixer valve, it is therefore preferably arranged influid flow direction after a heat-generating arrangement 223 and mixes,according to position within the slider movement 14, cold fluid 4 and/orhot fluid 8 to mixed fluid 11. Thereby, mixed fluid 11 can be providedwith a predetermined or predeterminable temperature. The slider body 29extends, along the length and width, along two body axes 35, 36, whichare aligned in an angled manner, in particular at right angles, to oneanother, see in particular FIG. 2d . The slider body 29 extendsvertically along a body vertical axis 95 aligned orthogonally to thebody axes 35, 36, however it is configured to be only relatively shortcompared to the extent along the length and width. The slider body 29defines a circumferential, free and flat cohesive edge 39.

With the aid of the views of the second slider 13, 202 b illustrated inFIGS. 2d, 2e , it can be seen that the slider body 29 has a relativelythick circumferential edge 39, when one compares the slider 13, 202 baccording to the second slider variant with the sliders 13, 202 aaccording to the first variant, which one could therefore also designateas labyrinth edge 39. As indicated, the edge 39 is distinguished by aplurality of box-like configuration elements 235, which are arranged forreinforcement of the slider body 29, in particular transversely orparallel to the body axes 35, 36, along the slider body 29, inparticular on the edge 39. Expediently, the individual box-likeconfiguration elements 235 have an opening, the orifice area of whichpoint in the direction of one of the body axes 35, 36 away from theslider body 29. Furthermore, the slider body 29 in the direction of thebody vertical axis 95, in particular compared to the above sliderconstructions of the first slider variant, is embodied to be relativelystrong or respectively thick, namely a few millimetres thick, inparticular 1 mm, 2 mm or 3 mm thick, so that it can be stated that theedge 39 forms a relatively thick edge 39. The edge 39, in particularcompared to the above construction variants of the first slider variant,is relatively rigid and offers relatively great resistance againstdeformation, for example against a pressure load deformation.

According to FIG. 2b , the slider body 29 of the first slider 13, 202 acan have four margin vertical edges 230 aligned parallel orsubstantially parallel with respect to the body vertical axis 95. Themargin vertical edges 230 are connected with one another respectivelyvia margin longitudinal edges 231, which are aligned parallel orsubstantially parallel to the body axes 35, 36. In particular in FIG. 2bit can be seen that respectively two immediately adjacent marginvertical edges 230 together are configured bent with respect to the bodyaxes 35, 36, in particular in a C-shaped or U-shaped manner, so that theslider body 29 of the first slider 13, 202 a on two edge portions 38 ofthe slider 13, 202 a, which are opposed to one another, has respectivelyan arched edge 232. Thereby, a controlling or regulating of a volumeflow and/or of a mass flow of fluid flows 4, 7, 10 can be assisted.

The slider body 29 of the second slider 13, 202 b can also have fourmargin vertical edges 230 aligned parallel or substantially parallelwith respect to the body vertical axis 95, see in particular FIG. 2d .The margin vertical edges 230 are likewise connected with one anothervia margin longitudinal edges 231 aligned respectively parallel orsubstantially parallel to the body axes 35, 36. It has been found thatit is advantageous: to configure a single margin vertical edge 231 to beshorter in vertical direction than the remaining margin vertical edges231, furthermore to configure a single margin vertical edge 231 to belonger in vertical direction than the remaining margin vertical edges231, furthermore to configure two margin vertical edges 231 to be ofequal length in vertical direction or respectively longer in verticaldirection than the shortest margin vertical edge 231, and to configurethem to be respectively shorter in vertical direction than the longestmargin vertical edge 231. Thereby, a slider body geometry is defined,which has the advantageous effect of assisting an injection mouldingproduction suitability of the second slider 13, 202 b, so that inparticular the production suitability of the second slider 13, 202 b isimproved.

FIG. 3 shows in a sectional view the ventilation device 1, 200 with aslider 13, 202 a designated as forward flow slider according to thesecond slider construction of the first slider variant, therefore aforward flow slider with a C-shaped or U-shaped edge 39. It can be seenthat the slider 13, 202 a is arranged upstream before a heat exchanger223 which is indicated by dotted lines. Furthermore, it can be seen thatthe first slider 13, 202 a is guidably mounted in the housing 53, 201via a guide arrangement 55, not described in further detail, so that thefirst slider 13, 202 a within the slider movement 14 indicated by adouble arrow is actuatable to and fro between a hot position 15, a coldposition 16 and at least one intermediate position 17. Thereby, a fluidflow through the fluid channel system 2 can be optionally controlledand/or regulated, in particular according to a predetermined orpredeterminable volume flow or mass flow.

FIG. 4 shows in a sectional view the ventilation device 1, 200, which isequipped with a second slider 13, 202 b, configured as reverse flowslider, according to the first slider construction of the second slidervariant. The second slider 13, 202 b is guidably mounted in the housing53, 201 via a guide arrangement, not described in further detail, sothat the second slider 13, 202 b within slider movements 14 indicated bya double arrow is actuatable to and fro between a first mixed position220, a second mixed position 221 and an intermediate mixed position 222.In the first mixed position 220, the slider 13, 202 b can close a coldorifice opening area 44 of the cold channel 3 in a fluid-tight manner,so that hot fluid 8 flows out from the hot channel 6 into the mixedchannel 9. Furthermore, in the second mixed position 221 the secondslider 13, 202 b can close a hot orifice opening area 45 of the hotchannel 6 in a fluid-tight manner, so that cold fluid 5 flows out fromthe cold channel 3 into the mixed channel 9. Furthermore, in at leastone intermediate mixed position 222 the second slider 13, 202 b can beactuated between the first and second mixed position 220, 221, so thatthe second slider 13, 202 b closes a predeterminable or predeterminedarea portion of the cold orifice opening area 44 and a predeterminableor predetermined area portion of the hot orifice opening area 45, sothat volume proportions, which are adjustable as desired, of hot fluid 8from the hot channel 6 and of cold fluid 5 from the cold channel 3 canbe provided in a mixed manner in the mixed channel 9.

With the aid of FIGS. 3 and 4 it can be seen, furthermore, that theventilation device 1, 200 by way of example has a blocking arrangement21, which by means of blocking ribs 24 arranged on the respective slider13, 202 a, 202 b and/or by means of counter-blocking ribs 27 arranged onthe pinion shaft 18, defines an in particular relatively narrow, inparticular a 0.1 mm, 0.2 mm, 0.5 mm, 1 mm or 2 mm narrow, sealing gap 23between the sliders 13, 202 a, 202 b and the pinion shaft 18, 215. In sofar as mention is made below only of “slider 13, 202 a, 202 b”, ofcourse all the variants described above are included thereby. In anycase, a bypass fluid flow 22 of mixed fluid 11 and/or of cold fluid 5and/or of hot fluid 8, indicated respectively in FIG. 3 by a dottedline, between the slider 13, 202 a, 202 b and the pinion shaft 18, 215can be reduced or prevented. The mode of operation of the sealing gap 23is for example like that of a labyrinth seal. Owing to the reducedbypass fluid flow 22 between the slider 13, 202 a, 202 b and the pinionshaft 18, 215, acoustic intrusive noises in operation of the ventilationdevice 1, 200 on the slider 13, 202 a, 202 b and/or on the pinion shaft18, 215 can be reduced or practically completely prevented, for examplebecause a reduced vibratory excitation of the slider 13, 202 a, 202 band/or of the pinion shaft 18, 215 is realized.

The sealing gap 23 can also be seen in particular in FIGS. 2c and 2e ,wherein it is formed, as can be seen, between a free rib edge 25 of ablocking rib 24 and a cylindrical stem body 26, 224 of the pinion shaft18, 215. Expediently, the pinion shaft 18m 215, the slider 13, 202 a,202 b, the actuation arrangement 47 and the counter-actuationarrangement 48 form between them a clear passage 49, into which theblocking rib 24 and/or the counter-blocking rib 27, proceeding from theslider 13, 202 a, 202 b and/or from the pinion shaft 18, 25, projectwith the formation of the sealing gap 23. It is of course also possiblethat the sealing gap 23 is formed between a free counter-rib edge 28 ofthe counter-blocking rib 27 and a slider body 29 of the slider 13, 202a, 202 b.

The blocking arrangement 21 can have a sealing means 30, see inparticular FIG. 3, which is arranged by way of example on thecounter-blocking rib 27, namely there on its free counter-rib edge 28.The sealing means 30 can cover in a fluid-tight manner the sealing gap23 formed between slider 13, 202 a, 202 b and pinion shaft 18, 215 andthus realize an improved sealing effect. In FIG. 3 it can be seen,furthermore, that the sealing means 30 is realized as an elastic sealinglip 31, which has a root portion 50 arranged in a touching manner on thecounter-blocking rib 27, in particular on its free counter-rib edge 28,and a tongue portion 51, which can lie in a touching manner on theblocking rib 24, in particular on its free rib edge 25 or on the slider13, 202 a, 202 b. It can be seen furthermore that the tongue portion 51or respectively the sealing lip 31 is configured to be tapering in thedirection towards its free tongue end 52.

A blocking rib 24 or respectively a counter-blocking rib 27 can beformed respectively from a one-piece flat body 32, which has two largeareas 33, oriented opposed to one another, and one circumferential endface 34, connecting the large areas 33 with one another, see inparticular FIG. 3. In any case, a blocking rib 24 and a counter-blockingrib 27 is arranged parallel to an edge portion 38 of the edge 39 on theslider body 29. By way of example, the blocking ribs 24 are arranged onthe slider 13, 202 a, 202 b so that they protrude from the slider body29 respectively in an angled manner, in particular at right angles, tothe body plane 40.

Furthermore, in particular FIG. 2c shows a sawtooth row, labelled by thereference number 41, of the blocking arrangement 21, which preferablyinteracts with the blocking rib 24 and/or with the counter-blocking rib27, in order to counteract the occurrence of intrusive noises inoperation of the ventilation device 1, 200. A sawtooth row 41 hasseveral sawteeth 43 or other projection bodies, which are lined upadjacent to one another in a touching manner in stacking direction 42indicated by a dotted double arrow line in FIG. 2c . The stackingdirection 42 is expediently aligned parallel or substantially parallelto the body axis 35. Between the individual sawteeth 43 a tooth gap isrespectively formed. The sawteeth 43 and the tooth gaps can interactwith the fluid flow in the ventilation device 1, 200 aerodynamicallyform an acoustic point of view. The tooth gaps are not labelled incloser detail here. In any case, one or more, according to FIG. 2c two,sawtooth rows 41 are arranged on or in the region around thecircumferential free edge 39 of the slider body 29 of the slider 13, 202a, 202 b, and aligned here respectively parallel to a blocking rib 24and to a counter-blocking rib 27.

FIG. 5 shows in a sectional view a portion of the pinion shaft 18 ofFIG. 2 along its longitudinal axis 20 or respectively in section along asection plane marked by dashed lines, with viewing direction of an arrowV which is marked there. As described above, a bar extension 57 isjoined to a free stem end 58 of the stem body 26 of the pinion shaft 16,in particular to an equipping area 59 of the free stem end 58, in thedirection of the longitudinal axis 20. The bar extension 57 isconfigured as a hollow-cylindrical base body 65 with acircular-ring-shaped base cross-section area. The bar extension 57 orrespectively its base body 65 can be arranged in a materially bondedand/or force-fitting and/or form-fitting manner on the pinion shaft 18,wherein a cohesive component of bar extension 57 and pinion shaft 18, aone-piece pinion shaft-bar extension component as it were, can beprovided in particular by materially bonded connecting. The barextension 57 lengthens the pinion shaft 18 in the direction of thelongitudinal axis 20 towards one side. It is conceivable if the toothbar 18 has two free stem ends 58, to mount two bar extensions 57 ontothe pinion shaft 18, namely respectively a bar extension 57 on anequipping area 59 of a free stem end 58, in order to thus achieve alengthening of the pinion shaft 18 in the direction of the longitudinalaxis 20 on both sides.

Each bar extension 57 defines along its main extent an axial barextension longitudinal axis 60. According to FIG. 5 provision is made byway of example to arrange the bar extension 57 on the free end 58 of thepinion shaft 18 so that the bar extension longitudinal axis 60 of thebar extension 57 and the longitudinal axis 20 of the pinion shaft 18 arealigned coaxially to one another. Basically, one can also imaginearranging the bar extension 57 in an angled manner on the pinion shaft18, so that the bar extension longitudinal axis 60 is aligned in anangled manner to the longitudinal axis 20. In order, for example, thesave weight, in particular after a mounting operation of the pinionshaft 18 in the housing 53, provision is made by way of example thatbetween the pinion shaft 18 and the bar extension 57 a predeterminedbreaking portion 61 is formed. The predetermined breaking portion 61extends expediently along the equipping areas 59 or is formed by it. Thepredetermined breaking portion 61 serves to enable, as desired, thecomplete removal of the bar extension 57 from the pinion shaft 18, forexample in which the bar extension 57 is stressed by a predeterminedbreaking moment, in particular manually by hand or automatically throughan automation arrangement, until the predetermined breaking portion 61yields and a break occurs between bar extension 57 and pinion shaft 18or respectively the detaching of the bar extension 57 from the pinionshaft 18 occurs. One can imagine realizing the predetermined breakingportion 61 as a cross-section narrowing, wherein at least one singlepredetermined breaking cross-section 62 of the predetermined breakingportion 61 is configured to be smaller area-wise with respect to eachbar extension cross-section 63 of the bar extension 57 and with respectto each pinion shaft cross-section 64 of the pinion shaft 18. Thereby,as it were constructionally a mechanical weak point is established,which enables the removing of the bar extension 57 from the pinion shaft18. Furthermore, the predetermined breaking portion 61 can be realizedas a material weakening portion. Here, the material characteristics ofthe predetermined breaking portion 61 are decisive for a breakingbehaviour or respectively for the removal. The material characteristicsof the predetermined breaking portion 61 are expediently realized in amanner promoting predetermined breaking with respect to the materialcharacteristics of the regions of the pinion shaft 18 and of the barextension 57 immediately surrounding the predetermined breaking portion61.

According to FIG. 5, it can be seen furthermore that the bar extension57 has an externally circumferential outer shell surface 66. On theouter shell surface 66, functional elements 67, preferably tooth flanks,can be arranged spaced apart from one another in circumferentialdirection 19 around the bar extension 57, to which functional elements atool is able to be applied in a touching manner or to which the actuator54 indicated partially by dotted lines in FIG. 5 can be drivinglyarranged, in particular in order to actuate the pinion shaft 18.

In FIGS. 6 to 9, respectively different variants of a pinion shaft 18with bar extension 57 can be seen in several sectional views. In FIG. 6,a variant of the pinion shaft 18 with bar extension 57 is illustrated,in which the bar extension 57 has a hollow-cylindrically configured basebody 65 with circular base cross-section area, as in FIG. 5. In contrastto the variant of FIG. 5, in the variant of FIG. 6 provision is made toconfigure the base body 65 of the pinion shaft 18 to be smaller indiameter than the pinion shaft 18 there or respectively its stem body26. In particular, provision is made to arrange a circumferential groove68 in circumferential direction 19 in the region around or directly onthe predetermined breaking portion 61. The groove 68 can be of v-shapedconfiguration, viewed in cross-section, wherein the groove base of thegroove 68 is expediently configured tapering to a point, so thatproceeding from the groove base of the groove 68 a break/tear can beinitiated, in order to remove the pinion shaft 18 from the bar extension57.

In FIG. 7 a variant of the pinion shaft 18 with bar extension 57 can beseen, wherein the base body 65 of the bar extension 57 there is a solidmaterial base body 65. The base body 65 is therefore not configured tobe internally hollow, but rather for example is formed entirely from aplastic material or from a composite material. The base body 65according to FIG. 7 has furthermore at its free end pointing away fromthe pinion shaft 18 in the direction of the longitudinal axis 20 asingle, or a set of insertion faces 69, which are configured in angledmanner, in particular in an acute angled manner, with respect to thelongitudinal axis 20. For example, the insertion face 69 is configuredas a circumferential cylinder shell surface, which forms between it andthe longitudinal axis 20 an angle of 10° to approximately 90°. By theinsertion faces 69, the inserting of the pinion shaft 18 with barextension 57 into a recess of the housing 53, expediently within amounting operation of the pinion shaft 18, can be facilitated.

In FIG. 8 a variant of the pinion shaft 18 with bar extension 57 isillustrated, wherein the base body 65 of the bar extension 57 there is asolid material base body. In contrast to the preceding variants, thebase body 65 according to FIG. 8 is configured to be thin in diameter inthe manner of a pencil lead, in particular 1 mm, 2 mm, 3 mm or 4 mmthin. Thereby, the base body 65 or respectively the bar extension 57 canstill be used relatively well as insertion aid within a mountingoperation of the pinion shaft 18. Moreover, the base body 65, owing toits thin diameter, can be broken off relatively easily, for examplemanually by hand, from the pinion shaft 18. In particular, in thisvariant one can dispense with the formation of a separate predeterminedbreaking portion 61.

In FIG. 9 a further variant of the pinion shaft 18 with bar extension 57is illustrated, wherein the base body 65 of the bar extension 57 thereis configured hollow-cylindrically.

FIG. 10 shows in a perspective view a preferred further exampleembodiment of a ventilation device with a slider arrangement. For thesake of simplicity, in the example embodiments functionally identical orfunctionally similar components are provided with the same referencenumbers. A description once again of functionally identical orfunctionally similar components is not carried out, in order to avoidrepetitions. The ventilation device 1 according to FIG. 10 has a sliderarrangement 12 with slider 13 and pinion shaft 18, like the sliderarrangement 12 according to the above example embodiment. In contrast tothe above example embodiment, the ventilation device 1 according toFIGS. 10 to 12 has additionally a clamping arrangement, marked by thereference number 70, which serves for the touching detachable clampingof slider 13 and pinion shaft 18 to one another. For this purpose, theclamping arrangement 70 has been equipped with at least one clampingelement 71 arranged on the slider 13 and with at least onecounter-clamping element 72 arranged on the pinion shaft 18. Theclamping element 71 and the counter-clamping element 72 can be arrangedrespectively in one piece, therefore integrally, on the slider 13 orrespectively on the pinion shaft 18. Alternatively, one can imagineproviding the clamping element 71 and the counter-clamping element 72respectively as a single part and fixing same for example by means ofadhesive on the slider 13 or respectively on the pinion shaft 18. Inboth cases, it is advantageous to use a plastic material or a compositematerial for the production.

Basically, the clamping arrangement 70 is configured so that theclamping element 71 and the counter-clamping element 72 engage in atouching manner into one another detachably in a form-fitting and/orforce-fitting manner, whereby the slider 13 and the pinion shaft 18clamp immovably to one another. It is conceivable that the clampingelement 71 and the counter-clamping element 72 are brought intoreciprocal engagement in a linear movement, therefore when clampingelement 71 and the counter-clamping element 72 carry out a straightlinear movement to one another. It is, however, preferred here if thecounter-clamping element 72 is arranged on the pinion shaft 18, wherebywithin the slider movement 14 it rotates, for actuation of the slider13, together with the pinion shaft 18 about its longitudinal axis 20 incircumferential direction 19. For the clamping, the clamping element 71and the counter-clamping element 72 then come into reciprocal engagementin a rotational pivot-rotation movement.

However, both variants have in common the fact that with the engaginginto one another of the clamping element 71 and of the counter-clampingelement 72 either an elastic widening of the clamping element 71 or anelastic widening of the counter-clamping element 72 takes place, whereinthe respectively other element is substantially dimensionally stable,therefore is free of widening and free of compression, see FIG. 12.Furthermore, it can be seen in FIG. 12 that between the clampingelements 71 a clear intermediate clamping gap 85 is formed, into whichthe counter-clamping body 72 is able to be inserted with lateralwidening of the intermediate clamping gap 85 and with elastic deflectionof the clamping elements 71 for the clamping to one another of slider 13and pinion shaft 18. In FIG. 12 the elastic deflecting of the clampingelements 71 is indicated by two arrows.

In particular in FIGS. 10 and 12, it can be seen furthermore that theclamping element 71 has a pair of pin-like clamping fingers 73. Eventhough it is not illustrated in the FIGS., the counter-clamping element72 could also be realized as a pair of clamping fingers 73, as aconstructional reverse solution, as it were.

The two clamping fingers 73 of the clamping element 71 can protruderespectively in an angled manner, in particular at right angles, fromthe slider 13 and can be arranged respectively integrally, therefore inone piece, on the slider 13, so that these are securely and undetachablyconnected with the slider body 29 of the slider 13. According to FIG.10, two clamping elements 71, spaced apart from one another, formbetween them an imaginary straight equipping axis 86 indicated in FIG.10 by means of a dotted line. Along the equipping axis 86 at least twoor more clamping fingers 73 are lined up adjacent to one another with areciprocal distance, in particular in the direction of the equippingaxis 86. The equipping axis 86 can be aligned here parallel, inparticular substantially parallel, but also in an angled manner, to thelongitudinal axis 20 of the pinion shaft 18 or to an edge portion 38 ofthe edge 39 of the slider body 29, so that the clamping fingers 73 canbe distributed, as it were, respectively in a row as desired over theslider 13.

In particular in FIG. 10 it can be seen furthermore that each clampingfinger 73 can have a continuously constant finger cross-section 75 withrespect to its axial main axial extent 74, which is indicated by way ofexample by a dashed line. Expediently, the finger cross-section 75 is ofround or oval shape.

According to FIGS. 10 and 11 it can be seen furthermore that thecounter-clamping element 72 has at least one clamping body 76, fastenedintegrally on the pinion shaft 17 in an angled manner, in particular atright angles, which clamping body protrudes from the pinion shaft 18 orrespectively from its stem body 26. In particular, the clamping body 76is aligned here in an angled manner, in particular at right angles, withrespect to the longitudinal axis 20.

Preferably, the clamping body 76 defines with respect to its main extent77, which is indicated by a dashed line, a continuously constantclamping body cross-section 78, in particular a round, oval or polygonalclamping body cross-section 78 or, as can be seen in particular in FIG.12, a continuously T-shaped T-clamping body cross-section 79. In FIGS.11 and 12 it can be seen in this respect that, in particular theclamping body 76 with T-clamping body cross-section 79, has a base bodypart 80 and a centring projection 81 arranged thereon for the elasticwidening of clamping fingers 73 of a clamping element 71.The centringprojection 81 serves as it were for the reciprocal centring of clampingelement 71 and counter-clamping element 72, so that a relative movementbetween slider 13 and pinion shaft 17 is blocked.

It is preferred when the centring projection 81 has a pair of insertionslope faces 82, aligned in an angled, in particular acute-angled, mannerto one another. According to FIGS. 10 to 12, two lateral projections 83,84 are arranged on the base body part 80, which protrude to both sidesof the base body part 80 at right angles to the base body part 80. Itcan be seen, in particular in FIG. 12, that the clamping fingers 73 canlie in a touching manner both on the base body part 80 and also on thelateral projections 83, 84, so that one can at least designate thelateral projections 83, 84 as a stop for one of the clamping fingers 73.

Lastly, FIG. 13 shows in a perspective view a preferred further exampleembodiment of a slider 13 with protuberance elements 104 for aventilation device 1. For the sake of simplicity, in the exampleembodiments functionally identical or functionally similar componentsare provided with the same reference numbers. A description once againof functionally identical or functionally similar components is notcarried out in order to avoid repetitions. The slider 13 according toFIG. 13 can be used for slider arrangements 12 for ventilation device 1.It can be seen that the slider 13 has a substantially cuboid-shapedslider body 29. The slider body 29 extends here along two body axes 35,36 aligned at right angles to one another, as it were along the lengthand width. The slider body 29 forms two large slider areas 96, 97aligned in opposition to one another. In the direction of a bodyvertical axis 95 aligned transversely to the body axes 35, 36, theslider body 29 is expanded as it were vertically. Expediently, the twolarge slider areas 96, 97 are connected by means of an end face 98arranged circumferentially around the slider 13. In particular in FIG.13 it can be seen that on a large slider area 96 of the slider body 29two separate longitudinal tooth rows 99 are arranged.

Furthermore, it can be seen in FIG. 13 that each of the longitudinaltooth rows 99 defines a longitudinal tooth axis 100 and that each of thelongitudinal tooth rows 99 consists of teeth 101 lined up adjacent toone another in a touching manner in the direction of the respectivelongitudinal tooth axis 100. Furthermore, each longitudinal tooth row 99is arranged by way of example directly on the edge 39 or respectively onan edge portion 38 and is expediently aligned here parallel to therespective edge portion 38. Furthermore, the longitudinal tooth rows 99are aligned parallel to one another and formed with a reciprocaldistance, with transverse distance as it were. In FIG. 13, it can beseen furthermore that the teeth 101 of a longitudinal tooth row 99 formin the direction of the respective longitudinal tooth axis 100 toothcrests 102 and tooth troughs 103, which follow one another in analternating manner. On the tooth crests 102 by way of examplerespectively a single protuberance element 104 is arranged. Theprotuberance elements 104 are arranged in operation of the ventilationdevice 1 in a touching manner between the longitudinal ribs 91, see FIG.1, of a guide arrangement 55 of the ventilation device 1, in order toblock a transverse play 93 of the slider, indicated by a double arrow,relative to the housing 53 in a transverse direction 94 transversely tothe slider movement direction 88. The mentioned longitudinal ribs 91 area component part of one of at least two guide strips 89 of the guidearrangement 55, see FIGS. 1 and 4. The guide strips 89 are arranged forexample in a materially bonded manner and on sides, opposite to oneanother, of the housing 53. The longitudinal ribs 91 define or formbetween them a clear slider edge receiving space 92, which serves forthe receiving of edge portions 38 of the circumferential edge 39 of theslider 13, so that the latter is able to be guided within 14. For this,the longitudinal ribs 91 are equipped with a rib longitudinal axis 90and with respect thereto are spaced apart from one another, at leastpartially, transversely, and aligned in a parallel manner, see FIG. 1.

It must be mentioned in addition that in particular in FIGS. 2a, 2b, 2da mounting aid arrangement 236 of the fragrancing device 1 can be seen,which is arranged on at least one of the two sliders 13, 202 a, 202 b oron both sliders 13, 202 a, 202 b. The mounting aid arrangement 226serves for assisting a mounting operation of the respective slider 13,202 a, 202 b on or respectively within the housing 53, 201 and/or on orrespectively within the fluid channel system 2. The mounting aidarrangement 236 comprises expediently a single, two, three andpreferably four mounting projections 237, which are arranged in amaterially bonded or force- and form-fitting manner on the respectiveslider body 29 of the respective slider 13, 202 a, 202 b. It has beenfound that the mounting projections 237 can be preferably configured ina hemispherical or cylinder-shaped manner. In any case, provision ismade that within a mounting operation of a slider 13, 202 a, 202 b bymeans of an end effector, arranged on a mounting robot which is notillustrated, the mounting projections 237 of the mounting aidarrangement 236 are grasped, in order to hold on to and move the slider13, 202 a, 202 b, in particular in order to position the slider 13, 202a, 202 b on or respectively within the housing 53, 201 and/or on orrespectively within the fluid channel system 2. One can also imaginethat the mounting projections 237 of the mounting aid arrangement 236are grasped by hand or with a hand tool, in order to hold on to and movethe slider 13, 202 a, 202 b. Expediently, all the mounting projections237 project vertically away from the slider 13, 202 a, 202 b along abody vertical axis 95 aligned at right angles with respect to the bodyaxes 35, 36 spanning the respective slider 13, 202 a, 202 b. Themounting projections 237 can be arranged on one of the two large sliderareas 96, 97 of a slider body 29 of a slider 13, 202 a, 202 b.

1. A ventilation device, comprising: a housing including a fluid channelsystem; of the fluid channel system including a cold channel fordirecting a cold fluid flow of a cold fluid, a hot channel for directinga hot fluid flow of a hot fluid, and a mixed channel for directing amixed fluid flow of a mixed fluid provided from at least one of the coldfluid and the hot fluid; a heat exchanger arranged within the fluidchannel system such that a fluid is flushable around the heat exchanger,the heat exchanger configured to at least one of cool and heat at leastone of the cold fluid, the hot fluid, and the mixed fluid; a sliderarrangement including at least one first slider arranged within thefluid channel system upstream of to the heat exchanger guidabletransversely with respect to at least one of the cold fluid flow, thehot fluid flow, and the mixed fluid flow; the slider arrangement furtherincluding at least one second slider arranged within the fluid channelsystem downstream of the heat exchanger and guidable transversely withrespect to at least one of the cold fluid flow, the hot fluid flow, andthe mixed fluid flow; wherein the at least one first slider and the atleast one second slider are respectively actuatable within a slidermovement in a slider movement direction oriented transversely withrespect to at least one of the cold fluid flow, the hot fluid flow, andthe mixed fluid flow; wherein at least one of a volume flow and a massflow of at least one of the cold fluid flow, the hot fluid flow, and themixed fluid flow is at least one of controllable and regulatable viaactuation of the at least one first slider; and wherein at least one ofa predetermined fluid temperature and a predeterminable fluidtemperature of the mixed fluid is settable and at least two of the coldfluid, the hot fluid, and the mixed fluid are mixable via actuation ofthe at least one second slider.
 2. The ventilation device according toclaim 1, wherein the cold channel, the hot channel, and the mixedchannel each include a wall, and wherein at least one of: the at leastone first slider is guidably arranged at least one of (i) within thecold channel on the wall of the cold channel, (ii) within the hotchannel on the wall of the hot channel, and (iii) within the mixedchannel on the wall of the mixed channel; and the at least one secondslider is guidably arranged at least one of (i) within the cold channelon the wall of the cold channel, (ii) within the hot channel on the wallof the hot channel, and (iii) within the mixed channel on the wall ofthe mixed channel.
 3. The ventilation device according to claim 1,wherein at least one of the at least one first slider and the at leastone second slider is guidably mounted relative to the fluid channelsystem via a guide arrangement arranged on the fluid channel system. 4.The ventilation device according to claim 1, wherein the at least onefirst slider is configured as a forward flow slider and has a sliderbody.
 5. The ventilation device according to claim 4, wherein the sliderbody of the at least one first slider is composed of at least one of aplastic, a metal material, and a composite material.
 6. The ventilationdevice according to claim 4, wherein at least one of: the slider body ofthe at least one first slider has one of a square plate-shaped flatconfiguration and a rectangular plate-shaped flat configuration; and theslider body of the at least one first slider has at least one of ac-shaped edge and a u-shaped edge.
 7. The ventilation device accordingto claim 4, wherein: the slider body of the at least one first sliderextends along (i) a first body axis extending in a longitudinaldirection, (ii) a second body axis extending in a width direction, and(iii) a body vertical axis extending in a vertical direction; the firstbody axis and the second body axis are aligned in an angled mannerrelative to one another; the body vertical axis is aligned orthogonallyto the first body axis and the second body axis; and the slider body isnarrower in the vertical direction than in the longitudinal directionand the width direction.
 8. The ventilation device according to claim 7,wherein the slider body of the at least one first slider has four marginvertical edges aligned substantially parallel with respect to the bodyvertical axis and connected with one another via a plurality of marginlongitudinal edges aligned substantially parallel to at least one of thefirst body axis and the second body axis.
 9. The ventilation deviceaccording to claim 8, wherein two immediately adjacent margin verticaledges of the four margin vertical edges are bent with respect to thefirst body axis and the second body axis such that the slider body ofthe at least one first slider has, on two sides opposed to one another,a respective arched edge to facilitate at least one of controlling andregulating the at least one of the volume flow and the mass flow. 10.The ventilation device according to claim 4, wherein the slider body ofthe at least one first slider has a free circumferential and flatcohesive edge.
 11. The ventilation device according to claim 10, whereinthe edge forms at least one of a honeycomb-like reinforcement and alabyrinth edge.
 12. The ventilation device according to claim 10,wherein the edge has at least one of a plurality of honeycomb-shapedconfiguration elements and a plurality of box-shaped configurationelements, which reinforce the slider body of the at least one firstslider.
 13. The ventilation device according to claim 4, wherein: theslider arrangement includes a pinion shaft having a longitudinal axis;the pinion shaft is drivable rotationally about the longitudinal axis ina circumferential direction, and is arranged in a touching manner on theat least one first slider for actuating the at least one first sliderwithin the slider movement and; the slider body of the at least onefirst slider has an actuation arrangement engageable with acounter-actuation arrangement of the pinion shaft.
 14. The ventilationdevice according to claim 1, wherein: the at least one first slider,within the slider movement, is actuatable to and fro between a hotposition, a cold position, and at least one intermediate position; theat least one first slider when in the hot position, blocks the coldfluid flow of the cold fluid; the at least one first slider when in thecold position, blocks the hot fluid flow of the hot fluid; and the atleast one first slider, when in the at least one intermediate position,partially blocks the cold fluid flow of the cold fluid and the hot fluidflow of the hot fluid.
 15. The ventilation device according to claim 1,wherein the heat exchanger is configured as one of: a heat-generatingarrangement configured to emit thermal energy; a cold-generatingarrangement configured to receive thermal energy; and atemperature-control arrangement configured to emit and receive thermalenergy.
 16. The ventilation device according to claim 3, wherein: theguide arrangement includes a pair of guide strips arranged opposite oneanother at least one of on the fluid channel system and on a wall of thefluid channel system, on which opposite edge portions of acircumferential edge of an associated slider of the at least one firstslider and the at least one second slider are guidably arranged; thepair of guide strips are each formed by a pair of longitudinal ribs eachhaving a respective rib longitudinal axis; the pair of longitudinal ribsare spaced apart from one another transversely, at least partially, withrespect to their respective rib longitudinal axis, are aligned parallelto one another with respect to their respective rib longitudinal axis,and are arranged on at least one of the fluid channel system and a wallof the fluid channel system, define a slider edge receiving space forreceiving an associated edge portion of the opposite edge portions ofthe associated slider; and at least one edge portion of the oppositeedge portions of the associated slider is inserted in a sandwich-likemanner between two longitudinal ribs of one of the pairs of longitudinalribs and into the slider edge receiving space defined therebetween, andlies in a touching and play-free manner on the two longitudinal ribsblocking transverse play of the associated slider relative to the fluidchannel system in a transverse direction to the slider movementdirection of the associated slider.
 17. The ventilation device accordingto claim 16, wherein: a slider of the at least one first slider and theat least one second slider includes an actuation arrangement interactingwith a counter-actuation arrangement arranged on a pinion shaft foractuating the respective slider within the slider movement; theactuation arrangement includes at least one longitudinal tooth rowhaving a plurality of teeth lined up adjacent to one another in atouching manner in a longitudinal tooth axis; and the longitudinal toothrow is arranged at least one of on and in a region of at least one ofthe circumferential edge and one of the opposite edge portions of theslider and is aligned substantially parallel thereto.
 18. Theventilation device according to claim 17, wherein, during operation ofthe ventilation device, the longitudinal tooth row dips at leastpartially into the slider edge receiving space.
 19. The ventilationdevice according to claim 17, wherein at least one tooth of theplurality of teeth is disposed in a touching manner on one of the twolongitudinal ribs.
 20. The ventilation device according to claim 3,wherein: a slider of the at least one first slider and the at least onesecond slider has a slider body having two large slider areas aligned inopposition to one another; the slider body extends along (i) a firstbody axis extending in a length direction, (ii) a second body axisextending in a width direction, and (iii) a body vertical axis extendingin a vertical direction; the first body axis, the second body axis, andthe body vertical axis are aligned at right angles relative to oneanother; the slider body has an externally circumferential free end faceconnecting the two large slider areas with one another; two longitudinaltooth rows each having a longitudinal tooth axis are arranged on one ofthe two large slider areas; the longitudinal tooth axes of the twolongitudinal tooth rows are aligned substantially parallel to oneanother; the two longitudinal tooth rows are arranged with a transversedistance to one another with respect to their longitudinal tooth axes;the two longitudinal tooth rows are arranged at least one of on and in aregion of opposite edge portions, of the slider; and each of the twolongitudinal tooth row includes a plurality of teeth disposed in atouching manner on a longitudinal rib of the guide arrangement.
 21. Theventilation device according to claim 17, wherein the plurality of teethdefine a plurality of tooth crests and a plurality of tooth troughsarranged in an alternating manner in a direction of the longitudinaltooth axis.
 22. The ventilation device according to claim 21, wherein atleast one tooth crest of the plurality of tooth crests includes at leastone protuberance element projecting away from a tooth of the pluralityof teeth transversely to the slider movement direction.
 23. Theventilation device according to claim 22, wherein, during operation ofthe ventilation device, the at least one protuberance element dips atleast partially into the slider edge receiving space and lies in atouching manner on one of the two longitudinal ribs.
 24. The ventilationdevice according to claim 22, wherein the at least one protuberanceelement is at least one of: arranged integrally on the tooth; structuredas a hemispherical body; and lies directly on one of the twolongitudinal rib in at least one of a punctiform manner, a linearmanner, and a flat manner.